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    (Original post by mirah01)
    yeah thats the right way to do it, just solve it a little more and make y the subject
    Yeaaa do you got (4x)times(square root 1/65) ?
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    (Original post by ccchiulam)
    Yeaaa do you got (4x)times(square root 1/65) ?
    i don't remember but my answer had a 65 in it
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    (Original post by mirah01)
    i don't remember but my answer had a 65 in it
    So excited right now omg
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    (Original post by ccchiulam)
    So excited right now omg
    haha I can't wait for 4HR, i enjoyed this paper!
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    (Original post by mirah01)
    i don't remember but my answer had a 65 in it
    I got 16x/65
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    It was something like ..

    y/(y+x) = (4/9)^2
    y/(y+x) = 16/81
    Cross Multiply ;
    81Y = 16X + 16Y
    (81-16)y = 16X
    65Y=16X
    Y=16X/65
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    omg is that i misread the question i thought the area was y^2 (smaller triangle )and x^2


    Posted from TSR Mobile
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    (Original post by ccchiulam)
    omg is that i misread the question i thought the area was y^2 (smaller triangle )and x^2


    Posted from TSR Mobile
    Y was the area of the small triangle. X was the area of quadrilateral. So total area was (x+y)
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    (Original post by MohaimenH)
    I got 16x/65
    yeah that was my answer
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    (Original post by ccchiulam)
    I was like
    (4/9)^2= y^2 / (x^2 + y ^2 )
    the scale factor was 2.25
    so you just do

    y^2 = x^2 / 2.25^2

    which is =

    y^2 = x^2 / 5.0625

    then you square root that so you get

    y= √(x / 5.0625)

    isnt that right? what'd you do?
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    there was an inequality question too. values were -2, -1, 0, 1 ,2

    for the question with two similar shapes, first answer was 16.25cm
    second answer was 2cm

    and the question of functions,
    f(0.5) = 0.2
    ff(-1) = 0.2
    inverse of x / 3x+1 = -3x + 1

    thats all i can remember from my answers
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    Where did you get 4/9 from? Isn't the scale factor 2.25?
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    (Original post by hussain_kalash)
    Where did you get 4/9 from? Isn't the scale factor 2.25?
    There's a formulae you use for these type of questions it's
    Area1/area2=lenght1^2/lenght2^2
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    (Original post by mirah01)
    There's a formulae you use for these type of questions it's
    Area1/area2=lenght1^2/lenght2^2
    It's essentially the same thing your saying. Just a different method - he did 4/9 and y/y+x
    But if you do 9/4 you get 2.25 which is your scale factor

    Are there any more questions?
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    What did you get for the histogram question?
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    (Original post by mirah01)
    What did you get for the histogram question?
    I think it was 35, Not really sure though i don't remember
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    I looked at the unofficial mark scheme, and I think I got 77/100. I asked my Maths teacher and he said if I get that again in the calculator paper, then I'll get an A!
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    (Original post by Luke Collinson)
    I looked at the unofficial mark scheme, and I think I got 77/100. I asked my Maths teacher and he said if I get that again in the calculator paper, then I'll get an A!
    What are you talking about bro? this is a discussion about an IGCSE not GCSE ..

    Guys can you be a bit more interactive so we can make a marking scheme out of this discussion?
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    (Original post by Luke Collinson)
    I looked at the unofficial mark scheme, and I think I got 77/100. I asked my Maths teacher and he said if I get that again in the calculator paper, then I'll get an A!
    ah well done and also where's the mark scheme i need it omg
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    wheres the mark scheme omg, btw well done!!
 
 
 
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